I'm remodeling my unfinished basement. I'm building a closet to enclose the gas furnace and water heater. Can I install an electrical outlet on one of the walls? This would be facing outward toward the living space? I've tried to find this in the codes and came up empty. There's plenty of information about the outlets required for services to the furnace. As well as, wiring distances from the exhausts. The wall clearances to the furnace are good. But nothing about a separate electrical branch and outlet in the same space as the gas appliance.